CHICAGO (CBS) — The search for more possible victims of serial killer John Wayne Gacy is now in the hands of the FBI.

WBBM Newsradio’s Steve Miller reports the Cook County Sheriff’s office has turned over Gacy’s travel records to the FBI, which will check for matches in unsolved murders across the country while Gacy was killing at least 33 boys and young men.

“They input all that information, and they take it and lay it over all of the unsolved homicides and missing person cases that occurred in the entire United States during that period of time,” Cook County Sheriff Tom Dart said. “Then they see if there’s any matches showing Gacy in a town at the time that a body was found.”

Steve Miller is an investigative reporter and has been with Newsradio for more than two decades. He grew up in South Texas and received his undergraduate degree in Liberal Arts at the University of Texas in Austin. After graduation, he moved to...